Average GPS coordinates for Ionia Postcode location: 42.938, -77.501. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Ionia on map:

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Listing cities & postcodes (1):
>> New York, 14475 Ionia, Ontario, GPS coordinates: 42.938,-77.5009